* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: darkslategray;
  color: whitesmoke;

  h1 {
    text-align: center;
    line-height: 2em;
  }

  main {
    height: 1000px;
    //outline: solid 1px;

    .board {
      margin: 50px auto;
      width: 80%;
      //height: 600px;
      overflow: hidden;
      padding: 50px;
      background-color: sandybrown;
      @cellL: 25px;

      .data {
        float: right;
        width: 200px;
        height: 200px;
        outline: solid 1px;
      }

      .line {
        width: 100%;
        height: @cellL;
        float: left;

        .cell {
          float: left;
          height: 100%;
          width: @cellL;
          outline: solid 1px dimgray;
        }

        .type0 {
          &:hover {
            cursor: pointer;
            color: red;
            outline-width: 3px;
          }
        }

        .type1 {
          background-color: black;
          border-radius: 50%;
        }

        .type-1 {
          background-color: white;
          border-radius: 50%;
        }
      }
    }

    .settings {
      width: 80%;
      margin: 0 auto;
      background-color: lightgray;
      padding: 30px;
      color: black;

      p {
        line-height: 2em;
      }
    }
  }
}
